Reset it first. The reset button is on the left side up under the plastic arm. It's difficult to find the first time out. Once you know where it is it'll be easier next time. Push and hold the button, the ice maker will cycle and the tray will dump. You should then hear the tray refill. Best way to do it is have someone else push the button while you're outside so you can tell if the thing is working. It should click and fill. If it doesn't then you might have an obstruction somewhere in the line but that is doubtful. USE CAUTION: That water line is only pushed into the back of the box. If you pull it out, or it slips out, the only way to remedy putting it back in is to pull the box forward enough to push it back inside the hole. PAIN IN LOTS OF PLACES. I would not advise using compressed air. Start with the simple stuff. Remove the water line from the solenoid and push the reset button. If no water comes out then you know it's not an obstruction. Most likely causes are your water filters are plugged. Second cause is a bad valve. Third is the icemaker itself is bad.(unlikely). Start with the valve and work backwards. MAKE SURE YOUR LINE IS NOT FROZEN....Dennis